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Removing and installing valve guides
93
D Removing and installing cylinder head, see
page 78
D Remove and install valves, see page 87
Fig. 1
Special tool for removing and installing the valve
guides and valve seats:
À Press-in plates for valve seat inserts
Á Spacer ring for À
 Extraction and press-in punch for valve guides
and valve seats
à Press-in sleeve for valve guides
Fig. 2
Press out the valve guide from the combustion
chamber side with press-in punch Â.
Fig. 3
Lubricate the new valve guide and press in with
the press-in punch and press-in sleeve from the
rocker arm side.
Press-in depth, see publication “Service Data”.
Fig. 4
The press−in depth of the valve guides is deter-
mined by the press-in sleeve.
Note:
When the valve guides have been re-
placed, the valve seats must also be re-
conditioned (refer to technical data and
manufacturer’s instructions of the valve
seat turning equipment available in the
machine shops).
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